Diesel Chrysler-Jeep 300: MOT pass rate

69.4% of diesel Chrysler-Jeep 300s pass the MOT first time, measured across 2,932 DVSA tests on that fuel type alone. Average mileage at test was 116,180.

Diesel against the other Chrysler-Jeep 300 versions

Why the fuel type changes the number

Diesels carry DPFs, EGR valves and stricter smoke limits, so emissions and exhaust faults account for failures petrol cars never see.

On the Chrysler-Jeep 300 specifically, petrol is the strongest at 73.9%, and this diesel version sits 0.6 points below the 70% model average.

What it means if you are buying one

There is little to choose between fuel types on this model, so decide on running costs and mileage rather than MOT record. Buying a damaged one? run it through the analyzer, check the exact car, decode the VIN and check the mileage before you bid.

Mileage is part of the answer

The average diesel Chrysler-Jeep 300 had covered 116,180 miles at test, against 93,177 for the petrol. That is high mileage, so timing belts, clutches, suspension bushes and corrosion are the items worth budgeting for rather than the MOT itself.

Fuel type and mileage are tangled together: diesels are usually bought by higher-mileage drivers, so some of any gap between fuels is the miles rather than the engine. The per-year figures on the Chrysler-Jeep 300 page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Chrysler-Jeep 300

1. Parking brake efficiency less than 50% of the required value, 6.4% of tests (17.44x the national rate for this defect)
2. ESC MIL indicates a system malfunction, 2.4% of tests (11.65x the national rate for this defect)
3. Warning device shows system malfunction, 4.2% of tests (10.17x the national rate for this defect)
4. Parking brake inoperative on one side, 5.4% of tests (8.98x the national rate for this defect)
5. Parking brake efficiency below minimum requirement, 7.1% of tests (5.43x the national rate for this defect)
6. A steering ball joint with excessive wear or free play, 6.9% of tests (5.29x the national rate for this defect)
7. A suspension pin, bush or joint excessively worn, 17.2% of tests (3.43x the national rate for this defect)
8. Brake pipe damaged or excessively corroded, 2.9% of tests (2.74x the national rate for this defect)
9. Significant brake effort recorded with no brake applied indicating a binding brake, 2.7% of tests (2.56x the national rate for this defect)
10. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 5.6% of tests (2.52x the national rate for this defect)

From 2,971 DVSA-tracked diesel Chrysler-Jeep 300 tests, 2024, split out from the Chrysler-Jeep 300's other fuel types. DVSA testers marked 4.76% of these flagged defects as "dangerous", against 5.11% nationally. See which fuel type fails on the most dangerous defects nationally for how that compares across the whole fleet.

Most common MOT advisories on a diesel Chrysler-Jeep 300

Flagged but doesn't fail the car, a different list from the failures above.

1. A wheel bearing with excessive play, 4.2% of tests (6.48x the national rate for this defect)
2. A steering ball joint with excessive wear or free play, 5.6% of tests (4.21x the national rate for this defect), also fails
3. Brake pipe damaged or excessively corroded, 20.7% of tests (3.34x the national rate for this defect), also fails
4. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 17.6% of tests (3.17x the national rate for this defect)
5. A suspension pin, bush or joint excessively worn, 37.2% of tests (2.78x the national rate for this defect), also fails
6. A suspension component excessively damaged or corroded, 13.7% of tests (2.65x the national rate for this defect)
7. A brake hose ferrule excessively corroded, 3.3% of tests (2.62x the national rate for this defect)
8. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 2.9% of tests (2.3x the national rate for this defect)
9. Significant brake effort recorded with no brake applied indicating a binding brake, 3.6% of tests (1.8x the national rate for this defect), also fails
10. Brake disc or drum excessively weakened, insecure or fractured, 19.8% of tests (1.61x the national rate for this defect)

From 2,971 DVSA-tracked diesel Chrysler-Jeep 300 tests, 2024.

Other Chrysler-Jeep 300 fuel types

• Petrol Chrysler-Jeep 300 - 73.9%

All Chrysler-Jeep 300 MOT data · Every model